package PTA.Pta_ch02;
import java.util.Scanner;

public class ex13 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b= sc.nextInt();
        int c = sc.nextInt();
        System.out.println("sum="+(a+b+c));
    }
}
